Abstract:

In order to study the influence of different plants on the effect of soil in desert area and analyze the soil nutrients, the soil samples were collected from different plants in Qinglongwan, nutrient content were analyzed by organic matter, available nitrogen, available phosphorous, potassium. The results showed that the pH value was 7.40-7.72, soil showed slightly alkaline. The content of organic matter, available nitrogen, available phosphorous, potassium were relatively low. The content of organic matter had great effect on the contents and availability of other nutrients. The effect of different plants to protect and improve soil were different, the effect of the orchard and the mixed Populus tomentos-Robinia pseudoacacia forest was best, Populus simonii at last, except farmland. Generally speaking, the soil physical property in soil was obviously improved after modified by ecological forest.